Per Variety, Hendricks and Slattery join a cast that includes Oscar-nominee Isabelle Huppert, Boardwalk Empire alum Jack Huston, Amanda Peet and Marthe Keller. The 2018 series follows “people who believe themselves to be descendants of the Romanov [family, the last imperial dynasty to rule Russia].” Each episode will feature a different cast, a different story and a different location for those claiming familial ties to the son and daughter that apparently escaped the 1918 massacre of the czar and his family.

Weiner will write and executive produce the new series, also directing a portion of the eight-episode order. The series is estimated to cost an impressive $50 million for Amazon and The Weinstein Co., down from the initial $70 million reported. In addition to Slattery and Hendricks, the series also features Mad Men alum and producing partner Blake McCormick, and writers Semi Chellas, Marie and Andre Jacquemetton.

The Romanoffs is expected to debut on Amazon in 2018, so stay tuned for the latest casting and production announcements.